diff --git a/creditcard.go b/creditcard.go
index 94b93e0..d0529a1 100644
--- a/creditcard.go
+++ b/creditcard.go
@@ -29,6 +29,9 @@ func (r *CCStatementRequest) Name() string {
 // Valid returns (true, nil) if this struct would be valid OFX if marshalled
 // into XML/SGML
 func (r *CCStatementRequest) Valid(version ofxVersion) (bool, error) {
+	if ok, err := r.TrnUID.Valid(); !ok {
+		return false, err
+	}
 	// TODO implement
 	return true, nil
 }
@@ -74,6 +77,9 @@ func (sr *CCStatementResponse) Name() string {
 
 // Valid returns (true, nil) if this struct was valid OFX when unmarshalled
 func (sr *CCStatementResponse) Valid(version ofxVersion) (bool, error) {
+	if ok, err := sr.TrnUID.Valid(); !ok {
+		return false, err
+	}
 	//TODO implement
 	return true, nil
 }
diff --git a/invstmt.go b/invstmt.go
index b2e6470..12bba13 100644
--- a/invstmt.go
+++ b/invstmt.go
@@ -35,6 +35,9 @@ func (r *InvStatementRequest) Name() string {
 // Valid returns (true, nil) if this struct would be valid OFX if marshalled
 // into XML/SGML
 func (r *InvStatementRequest) Valid(version ofxVersion) (bool, error) {
+	if ok, err := r.TrnUID.Valid(); !ok {
+		return false, err
+	}
 	// TODO implement
 	return true, nil
 }
@@ -1181,6 +1184,9 @@ func (sr *InvStatementResponse) Name() string {
 
 // Valid returns (true, nil) if this struct was valid OFX when unmarshalled
 func (sr *InvStatementResponse) Valid(version ofxVersion) (bool, error) {
+	if ok, err := sr.TrnUID.Valid(); !ok {
+		return false, err
+	}
 	//TODO implement
 	return true, nil
 }
diff --git a/profile.go b/profile.go
index 086cff1..6713a0b 100644
--- a/profile.go
+++ b/profile.go
@@ -26,6 +26,9 @@ func (r *ProfileRequest) Name() string {
 // Valid returns (true, nil) if this struct would be valid OFX if marshalled
 // into XML/SGML
 func (r *ProfileRequest) Valid(version ofxVersion) (bool, error) {
+	if ok, err := r.TrnUID.Valid(); !ok {
+		return false, err
+	}
 	// TODO implement
 	r.ClientRouting = "NONE"
 	return true, nil
@@ -159,6 +162,9 @@ func (pr *ProfileResponse) Name() string {
 
 // Valid returns (true, nil) if this struct was valid OFX when unmarshalled
 func (pr *ProfileResponse) Valid(version ofxVersion) (bool, error) {
+	if ok, err := pr.TrnUID.Valid(); !ok {
+		return false, err
+	}
 	//TODO implement
 	return true, nil
 }
diff --git a/seclist.go b/seclist.go
index fe2b505..c49eb44 100644
--- a/seclist.go
+++ b/seclist.go
@@ -43,6 +43,9 @@ func (r *SecListRequest) Name() string {
 // Valid returns (true, nil) if this struct would be valid OFX if marshalled
 // into XML/SGML
 func (r *SecListRequest) Valid(version ofxVersion) (bool, error) {
+	if ok, err := r.TrnUID.Valid(); !ok {
+		return false, err
+	}
 	// TODO implement
 	return true, nil
 }
@@ -74,6 +77,9 @@ func (r *SecListResponse) Name() string {
 
 // Valid returns (true, nil) if this struct was valid OFX when unmarshalled
 func (r *SecListResponse) Valid(version ofxVersion) (bool, error) {
+	if ok, err := r.TrnUID.Valid(); !ok {
+		return false, err
+	}
 	// TODO implement
 	return true, nil
 }
diff --git a/signup.go b/signup.go
index 9bfa754..c797cb6 100644
--- a/signup.go
+++ b/signup.go
@@ -24,6 +24,9 @@ func (r *AcctInfoRequest) Name() string {
 // Valid returns (true, nil) if this struct would be valid OFX if marshalled
 // into XML/SGML
 func (r *AcctInfoRequest) Valid(version ofxVersion) (bool, error) {
+	if ok, err := r.TrnUID.Valid(); !ok {
+		return false, err
+	}
 	// TODO implement
 	return true, nil
 }
@@ -149,6 +152,9 @@ func (air *AcctInfoResponse) Name() string {
 
 // Valid returns (true, nil) if this struct was valid OFX when unmarshalled
 func (air *AcctInfoResponse) Valid(version ofxVersion) (bool, error) {
+	if ok, err := air.TrnUID.Valid(); !ok {
+		return false, err
+	}
 	//TODO implement
 	return true, nil
 }